Alright, let's liven this up. I'll post some ideas I had while at work today. I have no idea if these can even work, I didn't have books to reference and I'm a little hazy on the exact rules for thaumaturgy/ritual magic. I'll go over them tomorrow and check it out.
Some Binder Varient Basically using binding thaumaturgy as control style magic. "I'm not going to defeat you through my own force but I can lock you down to all hell while my friend wails on you," sort of thing. Again, I need to see the rules but I imagine that this would be basically doing a lot of Block actions for various things. Binding bullets to the gun so they can't fire, boots to the ground, standard life force magic being bound inside the caster creating a block to prevent the caster from casting on anything other than himself. Something like that.
Illusionist Bending light and the like to make glamors. Only thing I need to question would be if this would be restricted to visual with light manipulation or could I do sound as well? I imagine it would work pretty much just like Veils but I need to read up on those too. Also, can a ritualist do veils? I mean, I don't see why not but I wouldn't say that I'm particularly all seeing, either...
Chromiamancer That very well may be the wrong Latin prefix. I was going for color mage. Bending light and controlling darkness. I imagine one would have great battlefield control when he plunges the zone into darkness and then brings back full daylight, blinding everyone there.
Anyway, just some ideas. I'll hammer them out more and edit with some things fixed after I get some sleep. Let me know what you all think and feel free to post any of your own ideas! It's brainstorming, no such thing as a bad idea so long as you're being somewhat serious (There will be no steak-mancer!).